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It's unreal to think the 18.9st, 6ft 8 hulk of a man once had dreams of making it big as an England cricket player, but these dreams have changed and he's not holding back in the slightest with his training - he's even recruited the help of Eddie Hall.
Eddie once held the title of the World's Strongest Man, so he knows what training takes - plus since his own slimming down, he knows how to change up his training habits, which is exactly what former bodybuilder and actor Martyn has to do in order to hold his own in the octagon.
Mind you, looking at him train I don't think he'll have much to worry about in that department. I defo wouldn't like to take him on.
Along with a video he posted a comment on Instagram saying: "That stupid moment in life where you decide.... MMMM I know, I haven't done any bodybuilding training now for 5-6 wks, focusing purely on MMA, body weight and fitness work .....so I'll give my pal @eddiehallwsm a call and see if he fancies doing legs for fun what a twat move that was needless to say I won't be making that mistake twice lol." (sic)
Have to agree with you there, Martyn, it doesn't look like the most pleasant routine.
In fact, he has taken on some pretty grueling looking routine while Eddie puts him through his paces - definitely not a routine you should try at home, kids.
Recently the star spoke to LADbible about his transition to MMA and how it was a pretty natural one for him.
He said: "I've just always been very competitive, and I like challenging myself. I'm just a bit stupid really, aren't I?!"
For Martyn, entering the world of MMA isn't about rivalry, big fights or drama, it's all about sport.
"For me personally, I always try and carry myself as professionally as possible, and look down the line that you've got a lot of young people looking up to you," he said.
When commenting on the recent fight between Conor McGregor and his rival Khabib Nurmagomedov, and the scuffle that followed, he said: "The behaviour... just disappointed me. I understand it, but at the same time when you're in a role of influence like that, there should be a cutting off point."
He added: "I think [McGregor] is a fantastic fighter, and sometimes you get caught up in the drama, but when you are in that much of the limelight, I just believe you should have a bit more responsibility for your actions."
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